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[参考译文] AM625:关于 IPC

Guru**** 2482225 points


请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1552872/am625-about-ipc

器件型号:AM625


工具/软件:

你(们)好

当我使用 M 内核和 A 内核进行 IPC 通信时、我希望创建多个线程以在 IPC 上运行。 我能否创建多个 IPC 节点以便与 M 内核通信、从而分离读取和写入操作。 我是否需要初始化一次 rpmsgchar_init 并为 rpmsgchar_open 输入不同的 remote_dedpt?

int ipc_init( rpmsg_char_dev_t **rcdev){

	int ret;
	char eptdev_name[32] = {0};
	int flags = 0;
	int remote_endpt = REMOTE_ENDPT;
	char* dev_name = NULL;
	ret = rpmsg_char_init(NULL);
	if (ret) {
		printf("rpmsg_char_init failed, ret = %d\n", ret);
		return ret;
	}

    sprintf(eptdev_name, "rpmsg-char-%d-%d", RPROC_ID, getpid());
	*rcdev = (rpmsg_char_dev_t*)malloc(sizeof(rpmsg_char_dev_t));
    *rcdev = rpmsg_char_open(RPROC_ID, dev_name, remote_endpt,
            eptdev_name, flags);
	if (*rcdev == NULL) {
		perror("Memory allocation failed");
		return -ENOMEM;
	}

	return 0;

}